Invalid links and refences fixed.
SpaeseMat class documentation updated.

fix the compilation bug of main.cpp in perf test and accuracy test on ocl module. It caused by the incompatibility of command line parser class in core.hpp between master branch and 2.4 branch.

updated patch for tests; reenabled SURF & Denoising; removed fixes in ocl tests, since this is already fixed in another pull request

add a new function abssum
fix the bug of test and perf because someone remove non-free module from cmakelist.txt

New version removes inner comments and empty lines

remove as much warnings as possible
use enum instead of MACRO for ocl.hpp
add command line parser in accuracy test and perf test
some bug fix for arthim functions

All errors were found by doc/check_docs2.py

All errors were found by doc/check_docs2.py